Low temperature seal
In certain situations, having a seal which can perform well in low temperatures is crucial. In industries such as oil and gas, dairy, pharmaceutical and aerospace, low temperature seal products are essential to the successful operation of the facility. Without using specifically designed low temperature O-rings, the elastomer will lose its flexibility and ultimately fail.
Why do low temperatures cause seals to fail?
Elastomers used in O-ring technology naturally becomes stiffer and less elastic as the temperature cools. At certain very low temperatures, it reaches what is known as the glass transition (Tg) state, where the material becomes like glass – brittle and rigid – making it challenging to keep a good seal.
Added to this, materials naturally contract as they cool, which can lead to the O-ring not fitting properly. There is also a risk of ‘cold set’, where stresses which were undergone at higher temperatures are unable to relax out at cooler temperatures. Both of these issues are likely to result in leakage and seal failure.
Choosing a low temperature seal
Here at NES, we have developed a number of specific and unique materials, which have been specifically developed designed to meet the demands of clients operating low temperature facilities. Our products are suitable for sealing down to -100°C, and we can also provide solutions for cryogenic applications which work down to -250°C.
Talk to our expert team today about your requirements, and we’ll be pleased to find a reliable, cost effective solution for you.